请在此处提供一些帮助。
问题: - 1)正确的事件绑定:考虑使用首选的.on()方法而不是.click(),. bind(),.。hover()等。为了获得最佳性能和简洁代码,请尽可能使用事件委托
2)严格的平等比较:为了获得更好的性能,请使用严格的平等比较。
我不知道该怎么做,并希望得到一些帮助。
这是我的代码(很抱歉):
搜索Js:
$(document).ready(function(){
var submitIcon = $('.searchbox-icon');
var inputBox = $('.searchbox-input');
var searchBox = $('.searchbox');
var isOpen = false;
submitIcon.click(function(){
if(isOpen == false){
searchBox.addClass('searchbox-open');
inputBox.focus();
isOpen = true;
} else {
searchBox.removeClass('searchbox-open');
inputBox.focusout();
isOpen = false;
}
});
submitIcon.mouseup(function(){
return false;
});
searchBox.mouseup(function(){
return false;
});
$(document).mouseup(function(){
if(isOpen == true){
$('.searchbox-icon').css('display','block');
submitIcon.click();
}
});
});
function buttonUp(){
var inputVal = $('.searchbox-input').val();
inputVal = $.trim(inputVal).length;
if( inputVal !== 0){
$('.searchbox-icon').css('display','none');
} else {
$('.searchbox-input').val('');
$('.searchbox-icon').css('display','block');
}
}
菜单: -
$(function() {
$('#main-menu').smartmenus({
subMenusSubOffsetX: 1,
subMenusSubOffsetY: -8
});
});
// SmartMenus mobile menu toggle button
$(function() {
var $mainMenuState = $('#main-menu-state');
if ($mainMenuState.length) {
// animate mobile menu
$mainMenuState.change(function(e) {
var $menu = $('#main-menu');
if (this.checked) {
$menu.hide().slideDown(250, function() { $menu.css('display', ''); });
} else {
$menu.show().slideUp(250, function() { $menu.css('display', ''); });
}
});
// hide mobile menu beforeunload
$(window).bind('beforeunload unload', function() {
if ($mainMenuState[0].checked) {
$mainMenuState[0].click();
}
});
}
});
预加载: -
$(window).on('load', function() { // makes sure the whole site is loaded
$('#status').fadeOut(); // will first fade out the loading animation
$('#preloader').delay(350).fadeOut('slow'); // will fade out the white DIV that covers the website.
$('body').delay(350).css({'overflow':'visible'});
})
计数器: -
(function($){
$(window).on("load",function(){
$(document).scrollzipInit();
$(document).rollerInit();
});
$(window).on("load scroll resize", function(){
$('.numscroller').scrollzip({
showFunction : function() {
numberRoller($(this).attr('data-slno'));
},
wholeVisible : false,
});
});
$.fn.scrollzipInit=function(){
$('body').prepend("<div style='position:fixed;top:0px;left:0px;width:0;height:0;' id='scrollzipPoint'></div>" );
};
$.fn.rollerInit=function(){
var i=0;
$('.numscroller').each(function() {
i++;
$(this).attr('data-slno',i);
$(this).addClass("roller-title-number-"+i);
});
};
$.fn.scrollzip = function(options){
var settings = $.extend({
showFunction : null,
hideFunction : null,
showShift : 0,
wholeVisible : false,
hideShift : 0,
}, options);
return this.each(function(i,obj){
$(this).addClass('scrollzip');
if ( $.isFunction( settings.showFunction ) ){
if(
!$(this).hasClass('isShown')&&
($(window).outerHeight()+$('#scrollzipPoint').offset().top-settings.showShift)>($(this).offset().top+((settings.wholeVisible)?$(this).outerHeight():0))&&
($('#scrollzipPoint').offset().top+((settings.wholeVisible)?$(this).outerHeight():0))<($(this).outerHeight()+$(this).offset().top-settings.showShift)
){
$(this).addClass('isShown');
settings.showFunction.call( this );
}
}
if ( $.isFunction( settings.hideFunction ) ){
if(
$(this).hasClass('isShown')&&
(($(window).outerHeight()+$('#scrollzipPoint').offset().top-settings.hideShift)<($(this).offset().top+((settings.wholeVisible)?$(this).outerHeight():0))||
($('#scrollzipPoint').offset().top+((settings.wholeVisible)?$(this).outerHeight():0))>($(this).outerHeight()+$(this).offset().top-settings.hideShift))
){
$(this).removeClass('isShown');
settings.hideFunction.call( this );
}
}
return this;
});
};
function numberRoller(slno){
var min=$('.roller-title-number-'+slno).attr('data-min');
var max=$('.roller-title-number-'+slno).attr('data-max');
var timediff=$('.roller-title-number-'+slno).attr('data-delay');
var increment=$('.roller-title-number-'+slno).attr('data-increment');
var numdiff=max-min;
var timeout=(timediff*1000)/numdiff;
numberRoll(slno,min,max,increment,timeout);
}
function numberRoll(slno,min,max,increment,timeout){//alert(slno+"="+min+"="+max+"="+increment+"="+timeout);
if(min<=max){
$('.roller-title-number-'+slno).html(min);
min=parseInt(min)+parseInt(increment);
setTimeout(function(){numberRoll(eval(slno),eval(min),eval(max),eval(increment),eval(timeout))},timeout);
}else{
$('.roller-title-number-'+slno).html(max);
}
}
})(jQuery);
答案 0 :(得分:1)
幸运,
感谢您的帮助,真的很感激。 所以你想说我应该重写下面的代码?
更新了JS:
// JavaScript文档
$(document).ready(function(){
"use strict";
var submitIcon = $('.searchbox-icon');
var inputBox = $('.searchbox-input');
var searchBox = $('.searchbox');
var isOpen = false;
submitIcon.on("click", function(){
if(isOpen === false){
searchBox.addClass('searchbox-open');
inputBox.focus();
isOpen = true;
} else {
searchBox.removeClass('searchbox-open');
inputBox.focusout();
isOpen = false;
}
});
submitIcon.on('mouseup', function(){
return false;
});
searchBox.on('mouseup', function(){
return false;
});
$(document).on('mouseup', function(){
if(isOpen === true){
$('.searchbox-icon').css('display','block');
submitIcon.click();
}
});
});
function buttonUp(){
var inputVal = $('.searchbox-input').val();
inputVal = $.trim(inputVal).length;
if( inputVal !== 0){
$('.searchbox-icon').css('display','none');
} else {
$('.searchbox-input').val('');
$('.searchbox-icon').css('display','block');
}
}
1)只需将submitIcon.click(function(){
替换为submitIcon.on("click", function(){
(以及所有其他事件)。
2)严格比较===
,我可以在您的代码中看到if(isOpen == false){
- 您应该将其替换为if(isOpen === false){
;你可以在这个答案Which equals operator (== vs ===) should be used in JavaScript comparisons?